Improvement in pumps



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" UNITED STATES M. n. oLArP,- or

PATENT OFFICE.

NEW YORK, N. Y.

IMRROVEMENT IN PUMPS. i

Specification forming part of ALetters Patent No. 216,638, dated March7, 1865.

To all whom it may concern:

, Beit known that I, M. It. GLPP, 'of the city and county lof New York,have invented certain new and useful Improvements in Pumps; and I dohereby declare that the following is a full and exact descriptionthereof. The accompanying drawings form apart of this specication.

Figure 1 is a central longitudinal vertical section. Fig. 2 is across-section on the line g. 3 is a cross-section on the Similar lettersof reference indicate like parts in all the figures.

My improved pump is intended more espe- I cially for use in steam reengines and in vother situations where a veryhigh pressure ofthepwaterjwisdto braborne very quick action admissible. My pump has beenworked under pressures as highasl three hundred pounds per square inchand as rapidly as three hundred double strokes per minute in jectloutward like broad ilan ges from the ends of the cylinder'B. D is anoutside cylinder longer than A, and secured to the peripheries of theannular heads C502 and prbjecting considerably beyond'them,asreprese'nted. E' E2 are exterior heads, secured to the ends-of thecylinderDf Thepistou-rod a' plays through a stuffing-box in the head E',as represented.

-G and G2 are series of circular valves, singly adaptedtoslide axiallyon stems g g2, and to cover the induction-oriiices j7 f2, cored orotherwise formed in.l the annular heads C '02.

Thevalves G G2 are made of vulcanized rubber, lined and backed with acasting, which' serves as a guard to receive coiled springs h h, whichtend to force each valve to its seat. These springs prevent the' valvesfrom sliding outward, and prevent concussion by striking forciblyagainst the heads of the stems or slides g g2.

Two large ports, I" I?, are cut through the also provided with springs.chest', N, incloses these delivery-valves and outer cylinder,.D, at. thevpoints represented.

A casing, J, formed on the upper side of the cylinder D, incloses boththese ports, andV is surmounted by a lat plate7 K. .The spa-ce in.-

closed in the chest J K- is divided into two parts by the stoutpartition J 0n theplate K are mounted valves v MMz. I'

These cover corresponding apertures in the plate-K. These valves arevofrubber, Vbacked and lined with metal, and are adapted to slide axiallyon the guides on/'mh An additional ldischarges the water through anozzle, n, into a hose. The nozzle d at the bottom leads the water inthrough a suction-hose. The hose or pipes may be provided withair-chambers or not, and the couplings, screw-bolts, or otherfstenin'gs, stufng-box, -piston-packing, &c., and the means of drivingthe pump may le of any approved kind.

In the operation of my pump each movement of the piston to the rightcompels the. valves G'v to open and draw water through the nozzle'd andthrough the valveapertures f to follow the piston, and also opens the u.valve M2, drives the Water from before the piston up through the portI2, and out through thevalve passage k2. of the piston shuts the -valvesG and M2 and opens the valves G2 and M' and induces a flow of water uplthrou gh the nozzle D, out through the valves G2, into the cylinder B,to follow the piston, while the water to the left of the piston isdri/venl out of the cylinder B, up through the port If, and through thevalve-passage, thus maintaining the stream through the delivery-nozzle'.

My arrangement of the valves and valvepassages =allows very ready accessto all the valves and to their seats and ttings,andy also allows anunusually-free water-way. In the gures the pistonA is supposed to bejust completing its forward stroke, and the valves G2 and M are tightlyclosed, while the lvalves G and M2 are lifted to allow an induction ofWater on the left hand and an 'eductio'n on the right.

G may be of such size and so crowded together as to nearly touch eachother, the water issuing under them finds perfectly free egress Thesevalves are The reverse movement It will be observed that'al though thevalves y in one direction-to wit, on the side toward the axis of thepump. The water therefore flows with perfect freedom around into theinterior ot' the cylinder B. In the delivery of the Water at the otherend of the pump the valves G2, being closed, are outof the way, and thewater flows out and rises with perfect freedom through the port 'I2 andup through the valves M2.

The plate K may be extended by enlarging the casing J and made to carryfour or more valves, M M2. I propose to use as many in every case asshall befound to add in any appreciable degree to the freedom of .theaction ot'ithe pump; but there ils'less need of great I freedom for theow of the water in being driven out ofthe pump than in being inducted.

--Provided that sufficient power is available to impelthe piston A, thewater once got in the pump must by necessity be expelled duringtheproper movement of the piston; but alike certainty does natl existwith regard to the ini. duction. A pumpV Worked very rapidly withoutgreat freedoml of induction will form a l vacuum in the pump which theWater will not enterfast enough to ll. 'My pump, by allowinginduction-valves to be distributed over the w-hoie space surrou-ndin gthe pump to deliver into the pump in 'the manner described,and

.making separate provision for the deliveryvalves, is the most efficientin this respect of any'known to me.

The facility for access to my val-ves G Gis Very great. By simplyremoving exteriorheads E or E`,I can get at, examine, adjust, orrepairany of these without diiculty, and by removing the chest N or aside-plate bon'- subjected to very severe body of the. pump and thevalves, casing, 86e.,

in the. manner hereinabove represented' and@ described, and alsotointroduce the `duplexA pistons operated as described in my'previonspatent, I can work successfully and lwith little' 4 -difculty atastillhigher `velocity.

secure by Letters Patent, is- A v Inducting the water into theV maincylinder B through openings f f2, 'which surroundy or nearly surroundthe cylinderat` each'end, couvtrolled by valves G G2, as specified, anddelivering the Waterthrough valvesor sets of valves M M2, the severalparts being arranged andadapted for-joint operations and easyac` Ncess,substantially as herein set forth. A

Y R. CLAPP. Witnesses:

THoMAis D. STETSON,

net, or other ordinary provision thereon Vnot Ji). W- Saz-arson.

and proves little liable that; my double piston,4

e dated .the 7th of January,

d adaptation to rapid work- If, however, 1 choose in any extraordinarycase to construct the Having now fully described my invention, what Iclaim as new in'pumps, and desire to:'

